python - docker python 提卡

Question

我喜欢创建一个 Dockerfile 来安装所有必要的组件，以便在 Docker 容器中运行 python-tika。

到目前为止，这是我的 Dockerfile:

###Get python
FROM python:3

RUN pip3 install --upgrade pip requests
RUN pip3 install python-docx tika numpy pandas

RUN mkdir scripts

ADD runner.py /scripts/

CMD [ "python", "./scripts/runner.py" ]

我构建它并运行 Dockerfile:

docker build -t docker-tika .

docker run docker-tika

但它报错如下:

[~/Documents/BERT_DV/Docker_Parser] $ docker run docker-tika
2020-05-08 13:49:52,528 [MainThread  ] [INFO ]  Retrieving http://search.maven.org/remotecontent?filepath=org/apache/tika/tika-server/1.24/tika-server-1.24.jar to /tmp/tika-server.jar.
2020-05-08 13:50:09,742 [MainThread  ] [INFO ]  Retrieving http://search.maven.org/remotecontent?filepath=org/apache/tika/tika-server/1.24/tika-server-1.24.jar.md5 to /tmp/tika-server.jar.md5.
2020-05-08 13:50:10,133 [MainThread  ] [ERROR]  Unable to run java; is it installed?
2020-05-08 13:50:10,134 [MainThread  ] [ERROR]  Failed to receive startup confirmation from startServer.
2020-05-08 13:50:10,271 [MainThread  ] [ERROR]  Unable to run java; is it installed?
2020-05-08 13:50:10,271 [MainThread  ] [ERROR]  Failed to receive startup confirmation from startServer.

runner.py脚本如下:

import tika
tika.initVM()

我有以下两个问题:1. 我读到我们需要下载 tika-server jar2. 在后台启动 tika-server 的 python 脚本中调用 initVM()。

我不知道里面缺少什么。文件。感谢帮助!

I have update Docker file with Java as well and still it's complaining about Java

### 1. Get Linux
FROM alpine:3.7

### 2. Get Java via the package manager
RUN apk update \
&& apk upgrade \
&& apk add --no-cache bash \
&& apk add --no-cache --virtual=build-dependencies unzip \
&& apk add --no-cache curl \
&& apk add --no-cache openjdk8-jre

ENV JAVA_HOME=/opt/java/openjdk \
    PATH="/opt/java/openjdk/bin:$PATH"

###3. Get ython
FROM python:3

RUN pip3 install --upgrade pip requests
RUN pip3 install python-docx tika numpy pandas

RUN mkdir scripts
RUN mkdir pdfs
RUN mkdir output

ADD runner2.py /scripts/
ADD sample.pdf .

CMD [ "python", "./scripts/runner2.py" ]

cat runner2.py:

#!/usr/bin/env python
import tika
from tika import parser
parsed = parser.from_file('sample.pdf')
print(parsed["metadata"])
print(parsed["content"])

[~/Documents/BERT_DV/Docker_Parser] $ docker run docker-tika

2020-05-08 14:40:23,183 [MainThread  ] [INFO ]  Retrieving http://search.maven.org/remotecontent?filepath=org/apache/tika/tika-server/1.24/tika-server-1.24.jar to /tmp/tika-server.jar.
2020-05-08 14:41:00,480 [MainThread  ] [INFO ]  Retrieving http://search.maven.org/remotecontent?filepath=org/apache/tika/tika-server/1.24/tika-server-1.24.jar.md5 to /tmp/tika-server.jar.md5.
2020-05-08 14:41:02,324 [MainThread  ] [ERROR]  Unable to run java; is it installed?
2020-05-08 14:41:02,324 [MainThread  ] [ERROR]  Failed to receive startup confirmation from startServer.

Answer 1

我没有评论的声誉，所以在这里发帖。

看起来，您的 Dockerfile 现在正在生成 multi-stage build , Java 不再处于最后阶段 - 之前的阶段被删除。

正如 Giga Kokaia 之前和其他人所说，Java 是问题所在。看起来你想用单个 Dockerfile 来做。例如，可以通过将 Alpine 作为基础镜像来实现，但是您需要一些额外的依赖项才能安装 Python 和所需的 pip 包。当与许多库一起使用时，Alpine 可能不是 Python 的最佳基础，因为它不使用 libc 库。然而，这里是非常粗略更新的 Dockerfile:

### 1. Get Linux
FROM alpine:3.7

### 2. Get Java via the package manager
RUN apk update \
&& apk upgrade \
&& apk add --no-cache bash \
&& apk add --no-cache --virtual=build-dependencies unzip \
&& apk add --no-cache curl \
&& apk add --no-cache openjdk8-jre \
&& apk add python3 python3-dev gcc g++ gfortran musl-dev libxml2-dev libxslt-dev

ENV JAVA_HOME=/opt/java/openjdk \
    PATH="/opt/java/openjdk/bin:$PATH"


RUN pip3 install --upgrade pip requests
RUN pip3 install python-docx wheel tika numpy 
RUN pip3 install pandas

RUN mkdir scripts
RUN mkdir pdfs
RUN mkdir output

ADD runner2.py /scripts/
ADD sample.pdf .

CMD [ "python3", "./scripts/runner2.py"  ]